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2005 Dodge Neon SE 4dr Sedan

2005 Dodge Neon
Trim Info:
Front Wheel Drive, 4 Door Sedan, Compact
29 mpg city / 36 mpg hwy
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November 9, 2013, 10:45 am

Benjamin R

Question: Lost all power from battery

2004 Dodge Neon
120K miles

The Scenario:

Unlocked car remotely. Inserted key into ignition. Inside lights and indicators behave normally. Depressed clutch and turned key. All power cut off. No lights, no indicators, no head lamps, no keyless entry. Nothing.

Metered battery showed 12.44V. Removed battery and had it tested at auto store: all good. Installed same battery, keyless entry, internal lights and indicators returned. Inserted key into ignition, depressed clutch, and turned ignition: lost all power as before.

I have disconnected the battery to try 'resetting' the fault, but I get no power from the battery at all. I have checked my battery terminals and grounds. I have checked and metered the fuses and relays under the hood and in the passenger compartment.

Which part of the electrical system would prevent ALL battery power from reaching anything in the car?

November 11, 2013, 10:05 am

Ron W
Expert Mechanic

From your description, either the battery is defective, or there is a large issue with the battery connections.

Sounds like there is no voltage (or very little) getting to the car.

Check the terminals and connections at the battery. Sometimes greenish/gray corrosion gets on the battery cables and even when a new battery is installed, it doesn't make a good connection. Use a little sand paper or terminal brush to clean them up. It may be all you need to do. If they're OK, you may have to take it in and have it checked.

Turn on your headlights and try it again. If they light up, but dim out when you turn the key, it is probably a defective battery. (The auto parts store may be incorrect)

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